What is the Value of the expression 3 (2x - 4) when x = -3?​

-30

Step-by-step explanation:

3 (2(-3) - 4)

= 3(-6 - 4)

= 3(-10)

= -30

< coa = 150 ( given)

as ba and bc are tangents

so oc and oa is perpendicular to cb and ab respectively because in circle normal passes through centre

so in quadrilateral oabc

< coa + < oab + < ocb + < abc = 360

150 +90+90 + < abc = 360

330 + < abc = 360

< abc = 360 -330 = 30

so < abc = 30

⭐dhruv⭐

answer: -8.2562234e+13